I agree, don't care for the threads on the White Lightening, although the tap isn't all that hard to come by. They were popularized by the eastern cult. They work no better than a standard 1/4 X 28 vent.
Another point on that. Vents DO wear out. The hole gets larger with a lot of shooting, and accuracy will suffer. I recommend buying a few extras if you use them. Sure as hell, some day they won't be available, then you are stuck with making one, or paying a machinist to do it for you.